Power distribution network operation mode and grid structure evaluation method
A technology of operation mode and grid structure, applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve the inability to realize the quantitative evaluation of grid structure of distribution network line operation mode, overload of distribution network lines, and no targeted optimization Program and other issues
Pending Publication Date: 2020-04-03
SHENZHEN POWER SUPPLY BUREAU
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Problems solved by technology
[0008] The technical problem to be solved by the embodiments of the present invention is to provide a distribution network operation mode and a method for grid structure evaluation, and to solve the following problem: when dealing with the distribution network line overload problem and the emergency power supply problem in the case of a fault, the distribution network cannot be realized. Quantitative evaluation of network line operation mode and network frame structure, there is no problem of targeted optimization plan
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[0085] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0086] Such as figure 1 As shown, it is a schematic diagram of the main flow of an embodiment of the distribution network operation mode and grid structure evaluation method provided by the present invention. In this embodiment, the method includes the following steps:
[0087] Step S1, determining parameter information related to evaluation;
[0088] In a specific embodiment, the evaluation-related parameter information specifically includes:
[0089] Time range, which refers to the time period parameters that need to be evaluated;
[0090] Line load rate refers to the ratio of the actual value of the line transmission power or current to the rated value;
[0091] Line overload alarm load rate β z , which means that the power or current transmitted by the lin...
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The invention discloses a power distribution network operation mode and grid structure evaluation method. The method comprises the steps of S1, determining parameter information related to evaluation;S2, acquiring basic data and parameters through a database or a management system; S3, obtaining the maximum load of each line, and carrying out the calculation and analysis of section data on the basis of the maximum load; S4, evaluating the maximum load condition and the optimization scheme of each distribution network line during normal operation; and S5, based on the maximum load analysis result of the line, quantitatively analyzing the emergency transfer capability of the distribution network line under the condition of a three-level power supply fault. By implementing the method, quantitative evaluation of the distribution network line operation mode and the grid structure is realized, the optimization scheme with pertinence and priority is generated, decision support is provided for distribution network dispatching operation, mode planning and planning transformation, and the operation safety and power supply reliability of the distribution network are improved.
Description
technical field [0001] The invention belongs to the field of power grid evaluation, and relates to a distribution network operation mode and a method for grid structure evaluation. Background technique [0002] With the development of society and economy, the power load continues to grow, and the distribution network often faces the following two types of problems during operation: [0003] Under normal operation, the problem of heavy overload of the distribution network line, the heavy overload of the distribution network line means that the power of the line is close to or exceeds the rated power allowed by the equipment. Overload operation of distribution network lines may lead to reduced operating life, damage, or even fire and burnt down of related equipment, which will affect the safe operation of distribution network and user power supply, and must be dealt with immediately. [0004] When the line load of the distribution network has entered the overload stage, in or...
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Login to View More IPC IPC(8): H02J3/00
CPCH02J3/00Y04S10/50
Inventor 刘晟李扬刘军伟卢非凡林修莹闫麟
Owner SHENZHEN POWER SUPPLY BUREAU